We use a cheap-o Gilda corker...we use #8 X 1.75 corks....we never let our wine stay in the bottles too long, 1 1/2+ years is the maximum ..so far.
We had used #9 X 1.75 and had a bit of a problem on some bigger topped bottles.
With the Gilda you can not use the flange top bottles...and might have a problem with some of the bigger tops.
We do the bottling together....I fill with a cheap-o gravity filler, my honey runs the Gilda, I center the Gilda on the top of the bottle and he drives the cork in....by then the next bottle is full and we repeat....
We can do a 5 and 6 gallon batch in no time...I have everything laid out ready to go....
He does do something with vegetable oil on the iris...that's his department, so am not sure why he does that.
We have no complaints on the Gilda, but like I said we do it together...think it works better with two people running that one.
We have very limited space here, so storing a floor corker and bottle drying tree, as well as other much needed equipment is not in our cards...Wish we'd have been making wine when we built this
house....things would have been a bit different.